Antibody fragments, including Fab, scFv, and diabody formats, comprise the emerging niche within CD52 (Antibody) segmentation, representing roughly 14% of the market. These engineered derivatives retain antigen‑binding domains while lacking the Fc region, offering advantages such as diminished immunogenicity, improved tissue penetration, and the ability to be conjugated to drug‑delivery vectors or imaging agents. Clinical development programs are increasingly exploiting fragment formats for targeted radio‑immunotherapy and bispecific constructs, which expand the therapeutic landscape beyond conventional full‑length antibodies. Production relies on recombinant expression systems, enabling scalable, consistent yields that appeal to both biotech innovators and large‑scale manufacturers. Although current revenue contribution is modest, the high growth potential driven by precision‑medicine initiatives positions antibody fragments as a strategic growth engine for the CD52 market.